Nicagin
烟酸
🗣️ 情景例句
You tried, Mom.
尽力了， 妈妈。
Certainly. Ask whatever you like.
当然，你什么都可以问。
'It's all right,' she said, 'but isn't it upside down?'
是不错，她说到，但你不觉得有些混乱吗？